Question

18．Many people say they can not start their day without first having a cup of coffee or tea．People say these drinks help them think clearly and feel more awake．This is because of  caffeine，a kind of matter found in some plants．Caffeine helps to give a jumpstart to the  nervous system．Now a new report says it may also improve long-term memory．
    Michael Yassa is a neurobiology professor at the University of California．He and other  researchers wanted to know if caffeine could improve what they called memory consolidation．They asked a group of individuals to learn something new，then the same people were given caffeine，the active component in coffee，tea and chocolate．
    He and the other researchers worked with a group of l60 people who were Caffeinefree．On the first day，all the subjects were shown pictures of everyday objects．They were asked to identify whether the pictures could be found inside the house or outdoors．Some of the subjects were then given a caffeine pill，the others were given a placebo-a pill containing an inactive thing．On the second day，all of the subjects were asked to look at more pictures．Some of the images were exactly like the ones they had seen 24 hours early．But other images were different．And a third group of pictures was similar to the first group but a little different．The participants had to decide whether the images they saw were the same or different from the ones on the first day．
    Professor Yassa says their answers help to show the effects of caffeine on memory．He  says those who took the caffeine pills had a ten to twelve percent increase in their ability to   remember the objects．The amount of caffeine the researchers used in the study was similar to  one strong cup of coffee．
    Professor Yassa says pills with a little more caffene also increased memory，but resulted  in some participants appearing more nervous．

61．From the passage，we can learn that caffeineD．
A．Can be found in every plant  
B．can improve people's health
C．is contained only in coffee    
D．can help people think clearly
62．What does Paragraph 3 mainly discuss？A
A．How MichaeI Yassa does his research．
B．Why Michael Yassa does the research．
C．What the result of Michael Yassa research is．   
D．How many people participate in the research．
63．Which of the following statements about the experiment is true？D
A．The participants must be addicted to coffee．
B．All the pictures seen on the second day were the same．
C．All the participants must drink coffee on the first day．
D．The participants saw three groups of pictures on the second day．
64．What does this text mainly tell us？C
A．Coffeeis essential for people's work．
B．Caffeine has negative effects on our health．
C．Caffeine may help better long-term memory．
D．Caffeine can lead to difficult sleeping and anxiety．
65．The author wrote the text in order toB．
A．forbid people to drink coffee
B．report a new research of coffee
C．a(chǎn)ttract readers to drink coffee
D．introduce the procedure of research．

Answer 1

分析 本文屬于說明文閱讀，作者通過這篇文章向我們說明了一項關于咖啡因能否改善記憶的研究，Michael Yassa的研究發(fā)現(xiàn)服用咖啡因藥丸的人會增加百分之十二的記憶力，但有些人服用之后會感到緊張．

解答 61．D  細節(jié)理解題，根據(jù)第一段People say these drinks help them think clearly and feel more awake．This is because of  caffeine，a kind of matter found in some plants．可知咖啡因可以幫助人們清醒的思考，故選D．
62．A  推理判斷題，根據(jù)第三段He and the other researchers worked with a group of l60 people who were Caffeinefree．可知本段主要講述了MichaeI Yassa是如何展開他的研究的，故選A．
63．D  推理判斷題，根據(jù)第三段On the second day，all of the subjects were asked to look at more pictures．Some of the images were exactly like the ones they had seen 24 hours early．But other images were different．And a third group of pictures was similar to the first group but a little different．可知在第二天的時候參與者看到了三組略有不同的照片，因此D正確；誤解分析：文中沒有提到參與者需要對咖啡上癮，故A錯；B選項與D矛盾；第三段On the first day，all the subjects were shown pictures of everyday objects．可知第一天參與者只是看一些圖片，因此C錯；故選D．
64．C  主旨大意題，根據(jù)倒數(shù)第二段He  says those who took the caffeine pills had a ten to twelve percent increase in their ability to   remember the objects．The amount of caffeine the researchers used in the study was similar to  one strong cup of coffee．可知本文主要講述了對咖啡因可能有助于更好的長期記憶的研究，故選C．
65．B  推理判斷題，通讀全文可知本文主要向我們講述了一項新的關于咖啡的研究報告，故選B．

點評 考查學生的細節(jié)理解和推理判斷能力．做細節(jié)理解題時一定要找到文章中的原句，和題干進行比較，再做出正確選擇．在做推理判斷題時不要以個人的主觀想象代替文章的事實，要根據(jù)文章事實進行合乎邏輯的推理判斷．